Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.

Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.

ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...

Draw.Chat - Anonymous real-time whiteboard with text and video chat.

FastStone Capture - A powerful, lightweight, yet full-featured screen capture tool that allows you to easily capture...

Scrapbox - A new style of note-taking that lets you create, discuss, and learn together in one self-organizing space.